Hello, I wonder if anyone can advise me, I was diagnosed with over active thyroid last July and put on medication. I have been feeling so ill since then and am on my second endocrinologist. (this is the 3rd time in 10 years I have been diagnosed with this) I was only slightly over range but after having a scan was told my thyroid was enlarged and had nodules. Because I felt so ill and was told I should not feel this bad I requested b12 and vitamin d blood test but was told my blood count was normal, the first 2 GPs refused but after asking a 3rd GP who agreed, as I thought B12, folate and d were very low. This test was done 4 weeks ago, my GP said I could not have B12 injections until the folate had been treated. I had another blood test yesterday so I am hoping the injections for b12 can start soon. Could these deficiencies be related to my thyroid. When I told the endo about b12 he said it's only a vitamin but he did request a blood test for antibodies, I wont know the results until next month when I go back. If anyone has experienced the same I would love to hear.